/* 初始化 */
*{
    margin: 0;
    padding: 0;
    border: 0;
  }
.content{
    width: 80%;
    margin: 0 auto;
}
.main_top {
  margin: 0 auto;
  padding-top: 20px;
  padding-bottom: 20px;
}
.main_top .box {
  width: 1150px;
  height: 170px;
}
.main_top .box img{
  width: 210px;
  height: 168px;
  margin-right: 15px;
}